<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>
<body>
    <script>
        // 面试题一：
        // var x = 10
        // function fn(){
        //     console.log(x);
        // }
        // function show(f){
        //     var x = 20
        //     f()
        // }
        // show(fn)      //  10

        // 面试题二:
        var fn = function(){
            console.log(fn);
        }
        fn()

        var obj = {
            fn2:function(){
                console.log(fn2);
            }
        }
        obj.fn2()
    </script>
</body>
</html>